Python 3.5+
>>> first = {"a": 1}
>>> second = {"b": 2}
>>> merged = {**x, **y}
>>> print(merged)
{"a": 1, "b": 2} >>> first = {"a": 1}
>>> second = {"b": 2}
>>> merged = {**x, **y}
>>> print(merged)
{"a": 1, "b": 2} merged = {**first, **second} const first = { a: 1 };
const second = { b: 2 };
const merged = { ...first, ...second };
console.log(merged) // { a: 1, b: 2 }